If 1.0 mL of an unknown liquid was added to a flask instead of 6mL, would that change the calculated molar mass of the unknown liquid?
Probably but you don't give enough information about the experiment for me to know for sure.
To determine whether adding a different volume of liquid would affect the calculated molar mass, we need to understand how molar mass is calculated. The molar mass of a substance is the mass of one mole of that substance and is expressed in grams per mole (g/mol).
In order to calculate the molar mass of a substance, you typically need to know the mass of a given amount of the substance (in grams) and the number of moles of the substance. The number of moles can be determined by dividing the mass of the substance by its molar mass.
In this scenario, if you were planning to calculate the molar mass of the unknown liquid by adding 6 mL to the flask, you would have to measure the mass of that 6 mL of liquid and then determine the number of moles. However, if you accidentally added only 1.0 mL instead of 6 mL, the mass you measured would correspond to only 1.0 mL of the liquid instead of 6 mL.
As a result, the mass you measured would be significantly lower than what it should have been if you had added the correct volume. Consequently, this lower mass value would lead to a lower calculation of the molar mass of the unknown liquid.
Therefore, adding a different volume of liquid would indeed change the calculated molar mass of the unknown liquid. The molar mass you calculate would be lower than the actual molar mass of the substance, as it was based on a smaller quantity of liquid.